Shimano Acera rear derailleur compatibility

Hi all,

I have a 2002 Specialised Hardrock A1 FS and I want to upgrade the wheels. The rear derailleur currently is a Shimano Acera RD-330SGS and the casette is a Shimano HG, 11x30, 8-speed, both standard on this bike.

I am looking at getting some new wheels but have an option on the casette and want to know what will be compatible with my current system. The options I have are:
LX 8 Speed
LX 9 Speed
XT 8 Speed
XT 9 Speed

Firstly, are either the LX or XT cassettes compatible? And secondly although my front shifter is only 8 speed, could I get a 9 speed one for future upgrades? How would this work?

Sorry for the newbie level of the questions, I'm pretty new and have finally started getting out and doing some good XC stuff so would like to upgrade my bike a little.

I have a 2002 Specialised Hardrock A1 FS and I want to upgrade the wheels. The rear derailleur currently is a Shimano Acera RD-330SGS and the casette is a Shimano HG, 11x30, 8-speed, both standard on this bike.

I am looking at getting some new wheels but have an option on the casette and want to know what will be compatible with my current system. The options I have are:
LX 8 Speed
LX 9 Speed
XT 8 Speed
XT 9 Speed

Firstly, are either the LX or XT cassettes compatible? And secondly although my front shifter is only 8 speed, could I get a 9 speed one for future upgrades? How would this work?

Sorry for the newbie level of the questions, I'm pretty new and have finally started getting out and doing some good XC stuff so would like to upgrade my bike a little.

Thanks in advance,

Rich

Usually, an 8/9 cassette will fit on your rear wheel. The derailleur you have will work with an LX/XT cassette. If you shift over to 9 speed, you might need a new derailleur. You'll need a new cassette and shifter. Gets expensive. Ride what you have before expending any money. See if you like it enough before going through large expense that has very little benefit, 8/9 speed.